Voi 10 nam kinh nghiem trong nganh vien thong, toi da chung kien su chuyen minh manh me cua ha tang mang tu cap dong sang cap quang. Viec hieu ro cac loai cap quang khong chi giup ky thuat vien toi uu hoa toc do truyen dan ma con giup doanh nghiep tiet kiem hang ty dong chi phi bao tri.

Duoi day la tong hop chi tiet ve cac loai cap quang trong linh vuc Cap quang va cac loai cap mang hien nay.

1. Phan loai theo che do truyen sang (Mode)

Day la cach phan loai co ban nhat, quyet dinh khoang cach va bang thong cua he thong:

Cap quang Single-mode (SM): Co loi sieu nho (khoang 9 micron), chi cho phep mot tia sang truyen qua. Uu diem lon nhat la do suy hao cuc thap, co kha nang truyen tai du lieu di xa hang tram kilomet. Day la lua chon so 1 cho cac duong truc vien thong quoc gia.

Cap quang Multi-mode (MM): Co loi lon (50 hoac 62.5 micron), cho phep nhieu tia sang truyen cung luc. Cac dong cap OM3, OM4 hien nay ho tro toc do 10G, 40G den 100G nhung chi o khoang cach ngan (thuong duoi 2km). Day la "xuong song" cho cac trung tam du lieu va mang LAN doanh nghiep.

2. Phan loai theo moi truong va cau tao vo

Trong linh vuc Cap quang va cac loai cap mang, lop vo bao ve dong vai tro song con doi voi do ben soi quang:

Cap quang treo (ADSS/Hinh so 8): Co kha nang tu chiu luc cang tren cot dien, chong chiu tot voi tia cuc tim va gio bao.

Cap quang luon cong: Co lop vo cung, chong tham va chong con trung gam nham, chuyen dung cho cac duong ong ngam do thi.

Cap quang chon truc tiep (Armored): Duoc gia co bang lop giap thep chac chan, cho phep chon thang duoi dat ma khong lo bi de nen hay hu hai co hoc.

Cap quang trong nha (Indoor): Thuong su dung vo nhua LSZH (Low Smoke Zero Halogen) chong chay, an toan khi lap dat trong toa nha cao tang.

3. Tam quan trong cua viec lua chon dung loai cap

Viec hieu sai ve cac loai cap quang co the dan den he luy nghiem trong. Vi du: Su dung cap Multi-mode cho khoang cach 10km se khien tin hieu bi mat hoan toan do hien tuong tan sac. Nguoc lai, dung cap Single-mode cho mang noi bo ngan lai doi hoi thiet bi dau cuoi (SFP/Converter) dat do hon, gay lang phi ngan sach.

Loi ket: De dam bao ha tang mang van hanh tron tru, ban can can cu vao khoang cach truyen dan, bang thong yeu cau va dia hinh thi cong de chon loai cap phu hop.

Trong suot hon mot thap ky phat trien, VTXVN luon giu vung vi the la nha phan phoi thiet bi mang, dien thoai va ha tang vien thong tai Ha Noi. Voi doi ngu kinh doanh hon 10 nguoi giau chuyen mon cung hon 10.000 khach hang da duoc phuc vu, VTXVN tro thanh lua chon dang tin cay cho moi du an. Dia chi: So 2, Ngo 53 Pham Tuan Tai, Nghia Tan, Cau Giay, Hotline: 0973.497.685 – 098.939.5445.